21490165 is an odd 8-digits composite number following 21490164
and preceding 21490166 . In scientific notation, it is written as 2.1490165 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 16444560 positive integers (up to 21490165) that are relatively prime to 21490165.
21490165 has 8 divisors, whose sum is 26909568
The reverse of 21490165 is 56109412
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million four hundred ninety thousand one hundred sixty-five
Scientific notation
2.1490165 × 10^7
Engineering notation
2.1490165 × 10^6
Prime Factorization
5 × 23 × 186871
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21490165
Product of the distinct prime numbers
The prime factorization of 21490165 is 5 × 23 × 186871.
Since it has a total of 3 prime factors.
9 , 4 , 71 , 94 , 929 , 886 , 3172 , 5615 , 35476 , 87758 , 51582 , 891882 , 7452004 , 6029637 , 36435007 , 63727978 , 619374503 , 37972940 , 4795758248 , 8724934202
n×2
42980330
n×3
64470495
n×4
85960660
n×5
107450825
n÷2
10745082.5
n÷3
7163388.3333333
n÷3
5372541.25
n÷5
4298033
n2
461827191727225
n3
9.9247425517047E+21
n4
2.1328435501866E+29
n5
4.5835159812695E+36
2 √n
4635.7485911123
3 √n
278.0224823527
4 √n
68.086331896441
5 √n
29.271700303057
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21490164
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21490165 can be divided by 8 positive divisors.
The sum of these divisors (counting 21490165) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111110100111110101
3
Ternary
1111102210222001
4
Quaternary
1101332213311
5
Quinary
21000141130
6
Senary
2044335301
8
Octal
121764765
10
Decimal
21490165
12
Duodecimal
7244531
16
Hexadecimal
147e9f5
20
Vigesimal
6e6585
36
Base36
cslx1
md5
0e8d070cc6a540a6727b87cdb86f69be
sha1
0f66454ca8617b2fa19ec8d8195b03a0c4e11564
sha256
e9b14dd859306c589ae3dbd2ab34e807f3d49e7dbfc8add8ef0589c435bbcda2
sha512
c61f5cc20dd36ef952e69ee22630caf00ed563a198bd946e61f9f5c491b5ea2ba7a990859266751cee658e311052358d2d33e460be9b1bb741766d71ee707a68
ripemd-160
1bd6ced616714c11b23a97aa45a4c4f4f6ff0825
Diameter
42980330
Circumference
135026688.97686
Area
1.4508729127583E+15
Volume
4.1572664385607E+22
Surface area
5.803491651033E+15
Circumference
135026688.97686
Perimeter
85960660
Area
461827191727225
Diagonal
30391682.800636
Surface area
2770963150363350
Volume
9.9247425517047E+21
Space diagonal
37222057.643038
Perimeter
64470495
Area
1.999770400971E+14
Altitude
18611028.821519
Surface area
1.999770400971E+14
Volume
1.1696421266402E+21
Height
10130560.933545